Sonicgear headphones bluetooth airphone dnc3000 black

Digital Active Noise Cancellation Bluetooth 5.4 Foldable design Omnidirectional Microphone Up to 27 Hours playback time Ultra Lightweight Soft Earcup Cushion Bluetooth Version : V5.4 Wireless Effective Distance : 15m Digital Active Noise Cancellation Specifications : Noise Reduction Frequency range : 40Hz – 600Hz Max Noise Reduction Level : 20DB +/- 3DB Noise Reduction Central Frequency : 100Hz – 300Hz